<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>table</title>
</head>
<body>
    <table border="1">
        <thead>
            <tr>
                <th>学号</th>
                <th>姓名</th>
                <th>成绩</th>
                <th>备注</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <th>1</th>
                <th>gwc</th>
                <th>100</th>
                <th rowspan="3">优</th>
            </tr>
            <tr>
                <th>2</th>
                <th>zyh</th>
                <th>99</th>
            </tr>
            <tr>
                <th>3</th>
                <th>gwj</th>
                <th>98</th>
            </tr>
            <tr>
                <th>4</th>
                <th>th</th>
                <th colspan="2">缺考</th>
            </tr>
        </tbody>
        <tfoot></tfoot>
    </table>
</body>
</html>